<template>
  <div class="login_container">
    <div ref="loginbox" class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <el-form ref="loginFormRef" :model="loginForm" label-width="0px" :rules="loginFormRules" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      loginForm: {
        username: "admin",
        password: "123456"
      },
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    };
  },
  methods:{
    reset(){
      // resetFields是element表单组件中提供的方法
      this.$refs.loginFormRef.resetFields()
    },
    login(){
      // async valid => {
      //   if (!valid) return
      //   const { data: res } = await this.$http.post('login', this.loginForm)
      //   if( res.status == 200 ) console.log("成功")
      this.$refs.loginFormRef.validate( vali=>{
          if(!vali) return false;
          this.$http.post('login',this.loginForm)
          .then((res)=>{
            // console.log(res.data);
            // 1 登录成功提示信息
            // 2 保存服务器返回的 token
            // 3 使用编程式导航实现页面的跳转
            if(res.data.meta.status == 200){
              this.$message.success('登录成功')
              // console.log(res.data.data.token);
              window.sessionStorage.setItem('token', res.data.data.token)
              this.$router.push('/home')
            }else{
              this.$message.error('登录失败')
            }
          })
      } )
    }
  }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }
}

.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>